Heating device.



Patented lune ll, I90l.

A ELMENDURF HEATING DEVICE.

filed. Aug. 11, 1906 (Application (No Model.)

UNITED 1 STATES PATENT GFFICE.

ALBERT ELMENDORF, OF CHICAGO, ILLINOIS.

HEATING DEVICE.

SEEGIFICATION forming part of Letters Patent No. 676,180, dated June 11, 1901. Application filed August 11, 1900- Serlal No. 26,619. (No model.)

T0 aZZ whom, it may concern:

Be it known that I, ALBERT ELMENDORF, a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Heating Devices, of which the following is a specification.

My invention relates to a novel heatingdrum to be used in connection with furnaces, stovepipes, or any other apparatus furnishing a heated fluid, such as hot air, smoke, or other products of combustion; and it consists, primarily, of a pipe or other passageway, which I call a direct conduit, which has a preferably coiled helical pipe, which I call the indirect conduit, surrounding itand an arrangement of valves or dampers and apertures by which the heated fluid may be permitted to pass directly through the central pipe or direct conduit without being delayed, so as to permit the absorption and radiation of but a small portion of the heat, or by which the fluid may be compelled to pass through the helically-coiled pipe or indirect conduit, thereby delaying its passage until a large percentage of the heat is absorbed and radiated into the room or casing in which it may be placed. I may also employ inconnection with this apparatus a drum inclosin g Figure l is a side elevation of the complete.

apparatus with the drum lifted up, so as to show the coil in elevation. Fig. 2 is a section on the line AA of Fig. 1. Fig. 3 is a section on the line B B of'Fig. 1, and Fig. 4 is a perspective view of one of the caps employed in connection with the apparatus.

To illustrate my invention in its simplest form, I have shown it as connected to or taking the place of a joint of Stovepipe, acting as a drum, although it will be understood that it might be applied directly to the firebox of a hot-air furnace, so as to be employed in heating the air to be delivered by a system of pipes to a dwelling or other building in which it is employed. l

The central 'pipe at, whichin the form shown constitutes the direct conduit, may be of the general shape and size ofa joint of stovepipe, its ends being shaped so as to fit in between two ordinary sections of Stovepipe, as clearly shown in Fig. 2. In the form shown I surround this pipe a with a helically-coiled pipe or channel 5, which is conveniently con structed ofannular metallic strips 0, which have their inner edges secured tothe pipe a by the bolts (1 and which have their outer edges connected by lapping the edge of one over the other, as shown at e. WhileIpreferably construct this indirect conduit b in this manner, it will be understood that it might be made of a single piece, or, indeed, might be formed integral with the pipe a. I have also shown the channel I) as in the form of an equilateral triangle in cross-section, although it will. be understood that any other form desired might be employed.

Just within the upper and lower ends of.

the handle j, projecting beyond the chanand rapidly up through the pipe a, so that very little of the heat will be'absorbed and radiated into the apartment. On the other hand, when the valve h is turned so as to close the pipe at the smoke, &c., must pass through the tortuous course of the channel I), and thereby passing over a greater surface and necessarily consuming more time in passing a very much greater portion of the heat will beabso'rbed and radiated from the sheets c, constituting the outer portions of thechannels I), thus serving to heat the apartment in which it is located. In order that the channel may be readily c'leaned whenever it is neces sary, Imake the end pieces of the channel I) in the form of removable caps k, which are of triangular shape, so as to fit snuglyin the ends of the channel b and have the flangesl to prevent their beinginserted too far and also thehandles 'n'i, by which they can be grasped when it is desired to Withdraw them.

In connection with the apparatus hitherto described I preferably employ the cylindrical drnrnffri which is preferably made of sheet metal audof asizfle to fitsnugly over thechan; nelg hpitiextending substantiallythe length of the channel and conveniently resting on the-stemof thehandle j,,;it being notched, as henni t itotp mit i s descen ng to h P9 1 enshewn. in dotted line luE gl and tion Whenv d ire a f r. le ng nt-the ch nn l hth s n n. be l d etthe' fiillrline positie ishe n i Where it su'pportsitself upon the top o heenannelibi Theeapsl eanberemo e nd ballier e herweigh attached to a in W re canine placed i the other end of the channel handiwill, slid d w h ough the ehaine tand out theether end, so, th any es clean g appa atus or e a can be, attached t K the s ng, a h s. d wn. h ough heeh nneL. When e um, n s n'epleee itwill. be seen that the s real y a 5o can be easily constructed and easily cleaned.

le I have shown my invention as emi diini thefe l ehl at present eon.-

id ,be tn ap for.,-earrying o i spur: posesitwillbe understood that i is capable of odi cations a a do ot e rete ited n the interpretat on o the IOllOW? caims, except as may be necessitated by bat e thepriorar hat. c im a ne a desire to. secu 6o 1. In a hjeatin g device of the cla sdescribed, ,m inatienywithc dire c ndu t r tai eteen n t sur ou d ng, t e direetiee liand (lat, be hend ex pt. or Inner c mmunicating A th rew th a tepand bette' ,.t e' i ct nduit f rming-e p t on of the walls of the indirect conduit, a damper emplenien a yi hanne .19 form e lt deef thej channel b,,a n d the cold air entering said by Lettcrs, -Patent fthev United States, is?

or valve in the direct conduit and a drum surrounding both conduits.

2. In a heating device of the class described, the'combination with the direct conduit, of the indirect conduit surrounding the direct conduit,having a' portion of the walls thereof formed by the direct conduit, and having a tortuous passage therethrough, such indirect conduit in longitudinal section consisting of a series of triangles whose bases are on the direct conduit and are end to end, apertures opening through the walls of the direct conduit i'ntio'the indirect conduit at the upper and lower ends thereof, and a valve in said direct conduit between said apertures by whi t e ted uid ybe Permitte t pas r u said; d e e idnit e orce-dat Pa s' hrensh sa nd rect conduit sil ya and f th ur e esel tihed-r, l

In ahee i g device o h 1% Q b Q the combination, with a d i rect' cqnduitof an indirect conduit extending substantially helically aroundthe. direct condnit and communicating therewith, a valve or damperin thiei direct conduit and a removable drum surr und n ot n i w t i i s n e su f ce 1 substantially in contactwith thie ontersurface of the indirect conduit wherebyan indirect p ssa e v a r urs in ,t1 .e rum. as Wel a j anindirect passage of gases, &c., in the indi- 1 rect conduit,

i A:- ,Inehee i s if Qf ileel sie i hed, t e. b at nw t e dir ct endflteee:

ti g of t e cir ula r est the, in ire c ndu t sur u d n t e, d r ct on mned consisting of a helical pipe having acrosseet i th o m v t.a equ at r itr an le h t ase gain t he in rp ne, the bases i of the triangles occupying the entire outer u fe ee h hdir t nd it. eper n e'eliet h p and bottom .e th n r ini eerene ing into the indirect conduit, and a valve in a p pe between V he apertu es y whi the heated fluid may be permitted to pass through the centralpipe or forced to pass through the el ealipipe- A l I ,5. Inaheatingdeviceof the classdescribed, the combinationwith the direct condi it, of the indirect conduit surrounding the direct conduit and consistingof a h elir'salv pipe, re-

mov b e r t e end of nidhe e P ne apertures connecting saidpipes at their dppeer and lower-ends, and a valve in the direct conduit by which the heated pe m tt ee t tens s dd t etee dn ;or forced to pass through the indirect conduit.

I i 6- n shee i d v 6f t e els ees n i the combination with the direct conduit, of t e ndi teend i a jac the dire t f duit and having a v g 1-itn0li s passa e therethrongh, snch indirect conduit in longitudinal ectio leens n tin ff. a Ser fi l l s e whose bases are on the direct conduit and are ene. o. end apertures eeieeeet fiser duits at their ends, a dru'm surrounding the indirect conduit, and a valve in the direct IIG conduit by which the heated fluid may be permitted to pass through said direct conduit or forced to pass through said indirect conduit, substantially as and for the purpose described.

7. In a heating device of the class described, the combination with the direct conduit, of the indirect conduit surrounding the direct conduit and consisting of a helical pipe, apertures connecting the ends of said conduits, a drum surrounding the helical pipe and having a longitudinal channel 17, a valve in the direct conduit by which the heated fluid may be permitted to pass through said direct conduit or forced to pass through said indirect conduit and a handle for the valve received by such channel in the drum.

8. In aheating device of the class described,

' the combination with the direct conduit conduits, the drum n surrounding the conduit 25 and forming the complementary channel 1), said drum having the channel 17, and the valve h located in the pipe a and having a handle received by the channel 11, substantially as and for the purpose described. a

9. In a heating device of the class described, the combination with the direct conduit, of the indirect conduit, surrounding the direct conduit and consisting of a helical pipe, removable caps in the ends of said helicalpipe, apertures connecting said pipes at their upper and lower ends, a valve in the direct conduit by which the heated fluid may be permitted to pass through said direct conduit or forced to pass through the indirect conduit, and a removable drum securing both conduits, substantially as described.

ALBERT ELMENDORF.

Witnessesi HATTIE O. HALVORSON, J. H. MoELRoY. 

